Jacob dobbins



i @witch grieten 'genet @ffice 'JACOB DoBBIN-S, 'OF-LITGHFIELD.MIGHIGA'N.

IMPROVEMENT INV MAGHINES FOR CUTTING HOOPS FOB BBRELS.

dlgs Stimuli mimi tir in tips: @titers atmt' rnb' makiiiglgart nf tigrsame.

'IO ALL WHOM IT MAY CONCERN: y Be it known that I, JAcoB DoBBINs,of'Litchlield, in the-fcou'uty of Hillsdale, und State of Miehigamhevefv 'invented new and useful Improvementsiin Machines for Cutting andBending'Hoops, &c 'and Indo hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledinthe rtto make and use the same, reference being had .totheaccompanying drawings, and ,to the letters ot reference z markedthereon; l

This invention consists- A First,n an arrun'gementv for cutting the lsp,or, inother wordsy for tapering the endete the hoops, in

' which rrangement two additional knives `ure placed for operation `inzm oblique position togen-td corner from each end of .theboardfromvwhich the hoops are cut, before it reaches the knivesforcuttiug the hoops. To'l force 4the board againstY the knivesl fortapering ,the hoop-ends, and up age-inst the feedfrollers', s. doublerack- V'intr-is arranged for such action-upon the board when placed inIposition i.1nder a'slide 'projecting-from theside ei the rack-bnr infront; as the boardfbymenn's of this slide, raises the-bar sothttheteeth inthe lower jaw come in contect with the pinion-rrh'eehwhich'forces it forward to the place where there are no teeth, andI therere'ma'ins until the h'oard'passes from und'th slide, when the weight of'the ber brings the teeth in the,` v ,upper jew in contact withthepinion-wheel, which lthrows' it back'to its first position, ready forthejboard; yroller or treadle mayhe used 4in placeof' the slide, ifpreferred. Y Y 1 `=Second, in un arrangement for returning the boardbuck to the place where it is'fed` intok the mac-Bine,

Y wh-ieh's done by means of rollers' set with points, and attached totheshafts, which'move'in concert with'eech other by means ot' pulleys and sbelt, or otherwise, whereby, as soon as the board has passedthrough thefeedvrollers, it will vut once drop on the left-hand or furthermestypointed roller, and be returned to the place; for 4feeding the machine.i

Third, itconsistsv in combining u couple of small rollers with-u concavemetallic suri'ce, in connection A.with thelarge roller, for 'the purposeof 'bending the hoops.

' Fourth, in the form of theknives, and also. in the plan of fasteningthem tothe machine. -vIn thehccompanyingplatesoi' drawings myimprnvemonts in m'nchines for cutting and bending hoops'are v'llus'tratedl Figure 1, plate 1, being a plun or top view of n--machinemede according thereto.. Figure 2, plete 1, a vertical section taken' inthe pluneof.4 the line a: iigfl.- v-iigure 3, plete 2,l clongitudinalvertical section, tzt-ken in ethe plane-of the line-yy, fig. 1.; and Eigure 4, plate 2, u. detached AView, to be hereinafter referred to;4Figure 5' ila-detuchedplan view, partly in section, to show theposition of the outer knife. Figrel's' il n view of the board from whichthe hoops are cut, to be hereinafter referred to.

. 'Agfih thedmsingn represents a framework, of any suitableconstruction, -tc support 'the various working 'parte of the mehine.B,i.he drivin'g'shufnarranged to'turn in suitable henringsof theframework A, nndproridedtwithe pulley, AC, by which,.througl l a hclt,it is `tobe connected'with the driving-power employed.

' D, the .hedor frame, long und Ln which the board passes to be split orcut into hoops uccordingtothis invention. This bed D is provided with a.series of friction-rellene, E, arranged :1t-suitable points. v "F,nscries offfeedrollers arranged in the lineof thc bed D, so as to feedthe hoord along und over the seme. the hoard passing between them, theybeing arranged in pairs, cndthrough their shafts Gand pinionwheels H,suitably connected with the driving-shaft B, to receive the necessary:md required movement.

land J ure two cutters secured to the frame, und inclined in oppositedirections. The one, I, is located upon the frame, near: its centre, andthe other, J, upon the upper end of the stsnderd'or .support O. Thesetwo knives yserve Eo cut the lup upon each .end of the hoop, andtheiroperation -will be presently described.

AK, the knife or cutter-blades, attached lto the framework A,'inpositionfor splitting the board into,ho`ps after the lnpslmve been cut.

L is a lever-arm hung at one end to the upper end of a vertical swinginglever or arm, pivoted at its lower end, N', to the`post O of theframework. i

This lever L is extended forward in a line with thc bed, over which thehoard passes, for being' split, passing through a guide, O, and at' itsouter end, P, made of a. forked shape, with each prong, Q, provided withteeth, a, and projecting respectively over and under a spur-wheel, R,fixed to the shaft, S, of the upper feedroller of the first set ofrollers. By throwing the forked lever s'o as to bring the teeth of itsupper prong into connection with the spur-wheel R, the lever is made tomove forward until the smooth recess S is redhed by the spur-whecl R,when' the lever drops by its own gravity, and the upper arm Q engageswith the spurwl1eel R to be moved back. l f l T is a loop secured to theside of the lever P, and serves to hold the board, from which the hoopsare cut, upon the table or rollers E. l

U, a drum, arranged, by its shaft, V, turning in suitable bearingsof theframework A, to bear upon the lunder surface of the board, and W a drumarranged to bear upon the under side also.

These drums are connected through abelty and pulleys properly arranged,and are both provided with teethV suitahlefor carrying the hoarrhalongback after having been split.

' X, a. concave edge of an ripright frame, Y, between which concave andthe serrated or grooved drum Z the hoop is placed,fand therein, by' therotary movement, imparted to the said drum, by properly connecting it ywith the drivng-power A, friction-rollers, one at each end of theconcave, the hoop is heut.

The operation of cutting the laps for the hoops, our for cutting thecorners of the board,'is: as follows: The board is placed under the loopT, parallel to ther lever P, raising the lutter slifliciently tc engage,by

- its lower arm, with the spur-wheel R. It is moved forward by thispinion until theend of the board is brought against the c/lgeof the'knfeI, which, owing to its inclined position, cuts a corner from the boardn'a diagonal line, as seen at p, iig. 6. The feed is continued until theinclined or bevelled'end o5' the board is brought in contact with thcbevelled liangef upon the lowerl feed-roller' F. f This flange guidesthe bevelled end of the board toward the outer `end of the 'roller F,and therefore throws thevoutler end of the'board correspondingly in anopposite direction, bringing it in contact with the c'utter or knife Jto cut the bevel, as shown 'at tig. 6.

In order to increase or diminish the bevel given to this end of theboard, the rear end of the frame is adapted to be adjusted laterally, by`means of the adjusting-screw W and the pivot w, in the pieceO of theframe".

This piece is cut out at the bearing ofthe roller E, in order toallowthe requisite degree of lateral movement.

Having thus described my invention, I clanrasnew, and desire to securebyLetters Patent--v The arrangement of the inclined knives I J andthellangefof the feed-roller F, substantially-as described, y,

for the purpose'speclfied.

JACOB DOBBINS.

Witnesses:

ANDREW P. Hosnaru, JESSE E. MeAtLrs'rEn,

